OKLAHOMA CITY (AP) — An Oklahoma state senator was booked Thursday on child prostitution charges for allegedly hiring a 17-year-old boy for sex, leading to calls for his resignation and a separate internal investigation into his years of work with a youth program.

Ralph Shortey, a 35-year-old conservative Republican who has a wife and three young daughters, surrendered to authorities on charges of engaging in child prostitution, transporting a minor for prostitution and engaging in prostitution within 1,000 feet of a church. He was released after about two hours on a $100,000 bond.

"I have no...